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Sweep 28 Aug 2026 · 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Reference / Slash commands

/claude-api

A Claude Code slash command, read out of the shipped bundle. No mined inventory carries it: everything below comes from what this site has written about it.

What it is

[Skill](/docs/en/skills#bundled-skills). Load [Claude API](https://platform.claude.com/docs/en/api/overview) and Managed Agents reference material for your project's language. Also activates automatically when your code imports anthropic or @anthropic-ai/sdk. Run migrate to update existing Claude API code to a newer model; upgrade to move your project's Anthropic SDK dependency across a major version, currently the Python anthropic package from 0.x to 1.x; managed-agents-onboard for a walkthrough that creates a new Managed Agent; or prompt-audit to flag instructions written for older models in your prompts, skills, and tool descriptions and propose fixes as a diff. The prompt-audit subcommand requires Claude Code v2.1.221 or later, and upgrade requires v2.1.236 or later

Anthropic's own wording. Read off Commands, captured 2026-08-28.

Presence across releases

The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.

Changelog entries naming it

  1. v2.1.239Python SDK upgrade guide rewritten against the shipped anthropic 1.0.0 migration notes

    The /claude-api Python upgrade guide now matches the released 1.0.0 SDK built on httpx2.

    named in this entry

  2. v2.1.236Bundled guide for upgrading the anthropic Python SDK to 1.x

    A bundled guide walks your project through upgrading the anthropic Python SDK to 1.x.

    named in this entry

  3. v2.1.221migrate now ends with a prompt audit, and a TODO note ships inside the prompt

    The migrate command now finishes by auditing your prompts and tool descriptions for stale wording.

    named in this entry

  4. v2.1.221claude-api skill gains a prompt-audit subcommand

    You can run /claude-api prompt-audit to scan prompts and tool descriptions for outdated patterns and get a diff.

    named in this entry

  5. v2.1.219Bundled Claude API skill docs rewritten around Opus 5

    The bundled Claude API skill docs now target the new Opus, covering thinking defaults, fallbacks and fast mode.

    named in this entry

  6. v2.1.219The API skill's model placeholders now resolve to Claude Opus 5, with the previous Opus kept as a separate placeholder

    The API skill's model placeholders now render Opus 5, keeping the previous Opus named separately.

    named in this entry

Documentation pages

A reference table page is one whose own table defines this name, and it is where the description above came from. A page that mentions it carries the name somewhere in its text and may say nothing about it at all. Every page carrying it.

Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the slash command does. All slash commands.